CN212310776U - Machining die for gear transmission shaft for combined die core of passivation device - Google Patents

Abstract

A passivation device makes up the processing mould of the gear drive shaft for mold core, it is a technical field of machining, the inner wall of each quadrant is from top to bottom the step structure formed by inner wall of tooth form, arc inner wall and trough-shaped wall sequentially, after a plurality of quadrants are combined, a plurality of inner walls of tooth form connect and form the complete tooth form counter bore, a plurality of inner walls of arc form the smooth round counter bore, a plurality of trough-shaped inner walls form the complete hexagon counter bore, the tooth form counter bore, round counter bore and hexagon counter bore connect and communicate to form and pour the cavity, pour the liquid metal into and pour into the cavity and cool, move the quadrant to six directions through the hand grip after cooling, can obtain the upper portion and have gears, the middle part has drive shafts, the bottom has gear drive shaft of the hexagon step, the utility model can omit the appearance processing with complicated shape, can save a large amount of manufacturing, the cost is reduced.

Description

Machining die for gear transmission shaft for combined die core of passivation device

Technical Field

The utility model belongs to the technical field of the machine tooling, a mold processing is related to, especially relate to a passivation device makes up mold processing of gear drive shaft for mold core.

Background

Along with the acceleration of the construction process of the modern society, the use of ships is increasing day by day, the ship construction that produces is also fast developing simultaneously, and the requirement of delaying the corrosion rate of ship steel sheet is also higher and higher, and traditional physics method such as mainly utilize the oil film to seal the gas pocket of metal surface and reach the effective method of preventing rusty of isolation and oxygen contact, the oil film is more easily along with producing the object contact and is cleared away, the oil film is destroyed, the rust protection is invalid. The passivation is that oxidation-reduction reaction is generated between oxidizing substances in passivation solution and metal to promote a layer of metal oxide to be generated on the metal surface, so that the metal surface is converted into a state which is not easy to be oxidized, thereby delaying the corrosion speed of the metal and achieving the purpose of effectively protecting the metal. In the mechanical industry, the surface treatment of metal materials is to passivate the metal with a passivating agent to form a layer of protective film, cold concentrated sulfuric acid and cold concentrated nitric acid are commonly used to react with iron and aluminum to generate passivation, compared with the traditional physical sealing method, the passivation method has the characteristics of not increasing the thickness of a workpiece and changing the color after passivation, improving the precision and the added value, being convenient to operate, the passivation process is carried out in a non-reaction state, and the passivating agent can be repeatedly added for use, so that the service life is longer, the cost is low, the passivation promotes the passivation film with an oxygen molecular structure formed on the surface of the metal, the film layer is compact and stable in performance, and the passivation film has a self-repairing function in the air, so that compared with the traditional method of coating anti-rust oil, the passivation film formed by passivation is more stable. Because the modern ship is large, if the whole large-area passivation treatment is carried out, the treatment difficulty is increased and the construction cost is increased, only the steel plate for the ship is detached and passivated and then welded, when the steel plate on the ship is welded, a passivation film on the surface of the original steel plate at the welding seam can be damaged by high temperature generated during welding, the passivation treatment is carried out on the welding seam again, particularly, the passivation treatment cannot be carried out on the outer corner welding seam of the ship by using the conventional passivation device, a special sealing device for passivating the outer corner welding seam is needed, a combined mold core used in the manufacturing process of the sealing device is a key part, a gear transmission shaft in the combined mold core is special in structure, the traditional cutting method is difficult, materials are wasted, the processing steps are multiple, and the processing efficiency is lower, and a processing mold is needed to be designed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at being the key part to the combination mold core that uses in the present sealing device manufacturing process, the gear drive shaft structure in the combination mold core is special, and traditional cutting method, clamping difficulty, material, processing work step are many, machining efficiency is lower etc. is not enough, provides a passivation device combination gear drive shaft's for mold core mold processing die, can realize gear drive shaft's rapid prototyping, can reduce manufacturing cost, improve manufacturing efficiency.

The technical scheme of the utility model: the utility model provides a passivation device makes up mold processing of gear drive shaft for mold core which characterized in that: the mold processing is formed by a plurality of quadrant combinations, every the inner wall of quadrant is from last to being the step structure that comprises profile of tooth inner wall, arc inner wall and flute profile inner wall down in proper order, and is a plurality of behind the quadrant combination, it is a plurality of profile of tooth inner wall connection constitutes complete profile of tooth counter bore, and is a plurality of the arc inner wall constitutes glossy circular counter bore, and is a plurality of the flute profile inner wall constitutes complete hexagon counter bore, profile of tooth counter bore, circular counter bore and hexagon counter bore are connected and are communicated with each other and form the pouring cavity, every the outer wall smooth connection of quadrant is the cylinder structure, every be equipped with the handle on the outer wall of quadrant, the cylinder structure of handle top is tightened and is equipped with the ring.

The number of the segments is 6, and the structure of each segment is the same.

The circular ring and the outer wall of a cylinder formed by combining a plurality of fan-shaped bodies form clearance fit, the clearance value in the diameter direction is smaller than 0.3mm, and the upper surface of the circular ring is flush with the upper surfaces of the fan-shaped bodies.

The handle is a rectangular bar structure, the handle is welded and fixed with the outer wall of the sector, and the height of the handle is 2/3 of the height of the sector.

The utility model has the advantages that: the utility model provides a passivation unit makes up mold processing of gear drive shaft for mold core, the mold processing is formed by a plurality of segments combination, the inner wall of each segment is the step structure that comprises profile of tooth inner wall, arc inner wall and flute profile inner wall from top to bottom in proper order, after a plurality of segments combination, a plurality of profile of tooth inner wall connect and constitute complete profile of tooth counter bore, a plurality of arc inner walls constitute smooth circular counter bore, a plurality of flute profile inner walls constitute complete hexagon counter bore, profile of tooth counter bore, circular counter bore and hexagon counter bore connect and communicate and form the pouring cavity, pour liquid metal into to pour into the pouring cavity and cool, move the segment to six directions through the handle after cooling, can obtain the gear drive shaft that upper portion has, the middle part has the transmission shaft, the bottom has the gear drive shaft of hexagon step, the utility model discloses can save the appearance processing of complicated shape, can save a large amount of manufacturing time and materials and reduce the cost.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the overall overlooking structure of the present invention.

Fig. 3 is a schematic sectional view of the structure in the direction of a-a in fig. 2.

In the figure: the fan-shaped body comprises a fan-shaped body 1, a circular ring 2, a handle 3, a tooth-shaped counter bore 4, a circular counter bore 5 and a hexagonal counter bore 6.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-3, a machining die of a gear transmission shaft for a combined mold core of a passivation device is formed by combining a plurality of fan-shaped bodies 1, the inner wall of each fan-shaped body 1 is of a stepped structure consisting of a toothed inner wall, an arc-shaped inner wall and a groove-shaped inner wall from top to bottom in sequence, after the plurality of fan-shaped bodies 1 are combined, the plurality of toothed inner walls are connected to form a complete toothed counter bore 4, the plurality of arc-shaped inner walls form a smooth circular counter bore 5, the plurality of groove-shaped inner walls form a complete hexagonal counter bore 6, the toothed counter bores 4, the circular counter bores 5 and the hexagonal counter bores 6 are connected and communicated to form a casting cavity, the outer wall of each fan-shaped body 1 is connected smoothly to form a cylinder structure, a handle 3 is arranged on the outer wall of each fan-shaped body 1.

As shown in fig. 1-3, the machining die of the gear transmission shaft for the combined die core of the passivating device comprises 6 segments 1, wherein the structure of each segment 1 is the same; the circular ring 2 and the outer wall of a cylinder formed by combining a plurality of the fan-shaped bodies 1 form clearance fit, the clearance value in the diameter direction is less than 0.3mm, and the upper surface of the circular ring 2 is flush with the upper surfaces of the fan-shaped bodies 1; the handle 3 is in a rectangular bar structure, the handle 3 is fixedly welded with the outer wall of the sector 1, and the height of the handle 3 is 2/3 of the height of the sector 1.

As shown in figures 1-3, a passivation device makes up the mold processing of the gear drive shaft for mold core, divide the cylinder into six same segments when using, six same segments are fixed through the circular ring 2 and pieced together into the cylinder, the lower part welds the handle 3 in the middle of the segment, pour into liquid metal in gear-shaped counter bore 4, round counter bore 5, hexagonal through hole 6, after the liquid metal cools down, will weld six segments of sectors with handle 3 and move to six directions, have a kind of upper end have gear, the middle part has drive shaft, the lower end has gear drive shaft of the hexagonal step, the mold can omit the appearance processing of the complicated shape, can save a large amount of manufacturing time and material, lowering costs.

Claims (4)

1. The utility model provides a passivation device makes up mold processing of gear drive shaft for mold core which characterized in that: the mold processing is formed by a plurality of sectors (1) combination, every the inner wall of sector (1) is from last to being the step structure that comprises profile of tooth inner wall, arc inner wall and flute profile inner wall down in proper order, and is a plurality of behind sector (1) combination, it is a plurality of profile of tooth inner wall connection constitutes complete profile of tooth counter bore (4), and is a plurality of arc inner wall constitutes glossy circular counter bore (5), and is a plurality of the flute profile inner wall constitutes complete hexagon counter bore (6), profile of tooth counter bore (4), circular counter bore (5) and hexagon counter bore (6) are connected and are communicated with each other and form the pouring cavity, every the outer wall smooth connection of sector (1) is cylinder structure, every be equipped with on the outer wall of sector (1) handle (3), the cylinder structure of handle (3) top is locked and is equipped with ring (2).

2. The machining die for the gear transmission shaft for the combined die core of the passivating device according to claim 1, wherein the machining die comprises: the number of the segments (1) is 6, and the structure of each segment (1) is the same.

3. The machining die for the gear transmission shaft for the combined die core of the passivating device according to claim 1, wherein the machining die comprises: the outer wall of a cylinder formed by combining the circular ring (2) and the multiple fan-shaped bodies (1) forms clearance fit, the clearance value in the diameter direction is smaller than 0.3mm, and the upper surface of the circular ring (2) is flush with the upper surfaces of the fan-shaped bodies (1).

4. The machining die for the gear transmission shaft for the combined die core of the passivating device according to claim 1, wherein the machining die comprises: the handle (3) is of a rectangular bar structure, the handle (3) is fixedly welded with the outer wall of the fan-shaped body (1), and the height of the handle (3) is 2/3 of the height of the fan-shaped body (1).

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